2006 Lexus GS430 warning

STARTING AND DRIVING
353
Steering lock
The steering wheel is locked when the engine switch is
turned to “OFF” from “ACC” or “IGON” mode and any
door is opened.
When the steering lock is activated, you may hear a sound
coming from the steering column, it is not a malfunction. If you
select the “OFF” mode while any door is open, the steering
wheel is not locked until it is closed.
If you select the mode other than “OFF” or start the engine, the
steering lock is disabled.
If there is trouble somewhere in the steering lock system, either
of the following warning messages will appear on the
multi−information display.
 S/T IS NOT UNLOCKED
 CHECK S/T LOCK
G31045
When pushing the engine switch while the brake pedal is
depressed, the steering lock is not unlocked if load is
applied to the steering wheel, and the above message
appears.
The engine will not start. At this time, the master warning light
comes on and the engine switch indicator light blinks green.

STARTING AND DRIVING
354
G31046
To start the engine in this condition, push the engine
switch again while turning the steering wheel in either
direction as shown in the above illustration.
The steering wheel is unlocked, and the engine will start.
G31047
If the steering lock system is malfunctioning, the above
message appears.
At this time, the master warning light comes on and the engine
switch indicator light blinks amber. The engine will not start.
In this case, contact your Lexus dealer.

STARTING AND DRIVING
359
The buzzer will remind you to release the parking brake when
the vehicle speed rises above 5 km/h (3mph) with the parking
brake is applied. At this time the master warning light blinks
and the message “PARK BRAKE” appears on the
multi−information display.
CAUTION
Before driving, make sure the parking brake is fully
released
and that the parking brake reminder light is off.
AUTOMATIC TRANSMISSION
Your automatic transmission has a shift lock system to
minimize the possibility of incorrect operation. This
means you can only shift out of “P” position when the
brake pedal is depressed with the engine switch in
“IGON” mode. ( )
G31021

STARTING AND DRIVING
364
G31026
Shift range position indicator
The shift range position is displayed on the instrument cluster.
 Shift range positions
“6” (sixth range): The most suitable gear is automatically
selected between first and overdrive (sixth) gears according
to vehicle speed and driving conditions. Always use the “6”
(sixth range) position to improve fuel economy and for quiet
driving.
“5” (fifth range): The most suitable gear is automatically
selected between first and overdrive (fifth) gears according
to vehicle speed and driving conditions. This range is
suitable for acceleration such as when you want to pass a
vehicle running ahead of you during high speed driving. “4” (fourth range): The most suitable gear is automatically
selected between
first and fourth gears according to vehicle
speed and driving conditions. In the “4” (fourth range)
position, the automatic transmission system will select the
most suitable gear to handle current running conditions
such as hill climbing, hard towing, etc.
“3” (third range): The most suitable gear is automatically
selected between first and third gears according to vehicle
speed and driving conditions. This range is best used when
stronger engine braking is necessary.
“2” (second range): First or second gear will automatically
be selected according to vehicle speed and driving
conditions. This range is to be used when engine braking
stronger than that of the “3” (third range) position is
necessary.
“1” (first range): This gear is fixed in first regardless of
vehicle speed or driving conditions. This range is to be used
when maximum engine braking is necessary.
If you attempt to downshift the transmission when it is not
possible to downshift due to high vehicle speed, a warning tone
sounds twice.

STARTING AND DRIVING
372
INTUITIVE PARKING ASSIST
G31049
The intuitive parking assist is a warning system used
when parking the vehicle at low speed (e.g. into a garage).
It uses an ultrasonic sensor, which checks the
approximate distance to an obstacle. It will inform you of
the approximate distance to an obstacle by displaying
information on the multiinformation display and the
screen, and with beeping sounds.
1 Dual sensors
There are four of these steering guidance sensors installed in
the front bumper.
Steering guidance means that when an obstacle is inspected,
not only is the distance estimated, this function judges whether
collision with the obstacle within detection range is avoidable
if the vehicle is steered in a certain direction, and informs the
driver. There will be no warning if it judges that there is no
possibility of collision with the obstacle within detection range.
(See page 375.)
2 Rear corner sensors
There is one of these installed on each corner of the rear
bumper, they inspect obstacles and will sound a warning
depending on the distance to the obstacle. (See page 380.)
3 Back sensors
There are two of these installed near the center of the rear
bumper, they inspect obstacles and will sound a warning
depending on the distance to the obstacle. (See page 381.)

STARTING AND DRIVING
373
G31050
To use the intuitive parking assist, push the main switch
in the switch box with the engine switch in “IGON” mode.
Pushing the main switch again will turn the intuitive
parking assist off.
When you push the main switch, the indicator light in the
instrument cluster comes on and a beep sounds for one
second, indicating that the intuitive parking assist is turned on.
The intuitive parking assist will remain on even after turning the
engine switch to “OFF” and then to “IG−ON” mode with the
main switch on. However, a beep does not sound at this time.
If an error is detected in the intuitive parking assist while
self−checking, beeps sound and a warning appears in the
multi−information display and on the screen. For details, see
“Intuitive parking assist failure warning” on page 385.
Where to display
G31051
 Multiinformation display

STARTING AND DRIVING
376The selector lever must be in any position other than “P” or “R”
for these sensors to operate, however the obstacle at an angle
to the front of the vehicle will also be detected while the selector
lever is in “R”.
CAUTION
With long obstacles such as walls, the decision of the
sensor may change as the obstacle gets closer; from
certain avoidance to avoidance if steering is changed;
from certain avoidance to unavoidable collision; and
there are also times when
the decision will be changed
from avoidance if steering is changed, to certain
collision. When you move your vehicle, be sure to
confirm a safe distance around your vehicle with your
eyes and drive slowly, or an accident or injury may
result.
The steering guidance may not operate properly in the
following conditions:
 Tires other than those of Lexus genuine size are
installed.
 The steering sensor information cannot be received
properly. (See “Intuitive parking assist failure warning”
on page 385.) (A) Collision will be unavoidable
G31055
 3
About 50 cm (1.5 ft.) to about 100 cm (3.0 ft.)
4About 37.5 cm (1.1 ft.) to about 50 cm (1.5 ft.)
5About 25 cm (0.8 ft.) to about 37.5 cm (1.1 ft.)
6Less than about 25 cm (0.8 ft.)

STARTING AND DRIVING
380
Rear corner sensors
G31058
 3About 37.5 cm (1.1 ft.) to about 50 cm (1.5 ft.)
4About 25 cm (0.8 ft.) to about 37.5 cm (1.1 ft.)
5Less than about 25 cm (0.8 ft.) The rear corner sensor only operates when the
transmission is in “R”, it checks the approximate distance
to obstacles at an angle to the rear of the vehicle, and
sounds a warning depending on the distance.
1
Multiinformation display:
The indicator bars will come on depending on the
distance to the obstacle and will flash when the distance
between the vehicle and the obstacle is less than about
25 cm (0.8 ft.).
2 Screen:
The indicator bars will come on in yellow depending on
the distance to the obstacle. When the distance between
the vehicle and the obstacle is less than about 25 cm (0.8
ft.), the yellow indicator bars will turn red.
Beeps:
As distance to the obstacle gets closer, the interval of the
intermittent sound gets shorter, and then finally to a continuous
sound when the distance between the vehicle and the obstacle
is less than about 25 cm (0.8 ft.).
CAUTION
When backing up, be sure to confirm a safe distance
around your vehicle with your eyes to avoid an accident.